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Iontophoresis device

  • US 20050070840A1
  • Filed: 05/15/2002
  • Published: 03/31/2005
  • Est. Priority Date: 10/31/2001
  • Status: Active Grant
First Claim
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1. An iontophoresis device useful for administering an ionic drug by iontophoresis, said iontophoresis device having an iontophoresis electrode section (active electrode section) and a ground electrode section (inactive electrode section) both of which are connected to a power source, comprising (1) said iontophoresis electrode section comprises:

  • (1)-1. an electrode plate connected to a said power source of the same polarity as the charged ions of said ionic drug, (1)-2. an electrolyte-solution-retaining membrane arranged on a front side of said electrode plate and retaining therein an electrolyte solution in such a state that said electrolyte-solution-retaining membrane is impregnated with said electrolyte solution, (1)-3. an ion exchange membrane arranged on a front side of said electrolyte-solution-retaining membrane and selective to ions opposite in polarity to said charged ions of said ionic drug, (1)-4. an ionic-drug-retaining membrane arranged on a front side of said ion exchange membrane and retaining therein said ionic drug in such a state that said ionic-drug-retaining membrane is impregnated with said ionic drug, and (1)-5. an ion-exchange membrane arranged on a front side of said ionic-drug-retaining membrane and selective to ions of the same species as said charged ions of said ionic drug; and

    (2) said ground electrode section comprises;

    (2)-1. an electrode plate opposite in polarity to said electrode plate in said iontophoresis electrode section, (2)-2. an electrolyte-solution-retaining membrane arranged on a front side of said electrode plate and retaining therein an electrolyte solution in such a state that said electrolyte-solution-retaining membrane is impregnated with said electrolyte solution, and (2)-3. an ion exchange membrane arranged on a front side of said electrolyte-solution-retaining membrane and selective to ions opposite in polarity to said charged ions of said ionic drug.

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